Afferent sympathetic unmyelinated fibres with left ventricular endings in cats

The Journal of Physiology
R CasatiA Malliani

Abstract

1. We recorded the electrical impulse activity of thirty-three single afferent fibres with left ventricular endings from the third and fourth left thoracic sympathetic rami communicantes of anaesthetized cats. Their conduction velocity ranged from 0.23 to 0.98 m/sec (group C). 2. The endings of each fibre were localized to the left ventricle by mechanical probing performed at the end of the experiment on the non-beating heart. No fibre had multiple sensory fields. 3. The impulse activity (0.95 +/- 0.2 impulses/sec) was spontaneous but most often a fixed temporal correlation between impulses and ventricular dynamics was not detectable. It was increased during occlusion of the thoracic aorta, I.V. administration of isoprenaline or infusion of saline. It was unaffected by asphyxia, haemorrhage and I.V. administration of acetylcholine. It was decreased during occlusion of inferior vena cava. Therefore these ventricular receptors appeared to be mainly sensitive to mechanical events. 4. The fibres were excited during the occlusion of the left main coronary artery, after a latency of 14.5 +/- 1.3 sec. They were also excited during ventricular fibrillation, exhibiting the highest values of impulse activity (2.51 +/- 0.4 impulses/sec). ...Continue Reading

Citations

May 1, 1997·European Journal of Pharmacology·J KoleyB Koley
Sep 1, 1988·Der Schmerz·T Münzel, E Bassenge
Jun 25, 1995·Journal of the Autonomic Nervous System·T Gnecchi-RusconeA Malliani
Mar 1, 1983·Journal of the Autonomic Nervous System·A MallianiS Guzzetti
Apr 1, 1981·Journal of the Autonomic Nervous System·A MallianiM Pagani
Apr 1, 1981·Journal of the Autonomic Nervous System·L C Weaver
Apr 1, 1982·American Heart Journal·A Malliani, F Lombardi
Jan 1, 1982·Annals of the New York Academy of Sciences·P J Schwartz, H L Stone
Dec 1, 1987·The American Journal of Cardiology·F LombardiA Malliani
Jan 10, 2012·Autonomic Neuroscience : Basic & Clinical·M ZamirJ K Shoemaker
May 3, 2000·Medical Hypotheses·D F DavilaC Mazzei de Davila
May 1, 1990·Pain·T J Ness, G F Gebhart
Nov 1, 1980·American Heart Journal·A MallianiA Zanchetti
Apr 1, 1999·Annual Review of Physiology·R D Foreman
Jun 1, 1983·Pflügers Archiv : European journal of physiology·H BlumbergW Kohler
Jun 1, 1983·Pflügers Archiv : European journal of physiology·P HauptW Kohler
Nov 1, 1986·Pflügers Archiv : European journal of physiology·E BahnsA Nelke
May 5, 2007·Journal of Applied Physiology·Patricia A GwirtzBrian Foresman
Feb 23, 2010·American Journal of Physiology. Heart and Circulatory Physiology·Heidi L LujanStephen E DiCarlo
Jul 20, 2019·American Journal of Physiology. Heart and Circulatory Physiology·Siamak SalavatianMarmar Vaseghi
Jun 17, 2011·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Heidi L LujanStephen E Dicarlo
Feb 5, 2002·Journal of Neurophysiology·Hui-Lin Pan, Shao-Rui Chen
Jul 30, 2010·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Heidi L LujanStephen E DiCarlo
Mar 24, 2009·American Journal of Physiology. Heart and Circulatory Physiology·Heidi L LujanStephen E Dicarlo

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